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6909-13-3

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6909-13-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6909-13-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,0 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6909-13:
(6*6)+(5*9)+(4*0)+(3*9)+(2*1)+(1*3)=113
113 % 10 = 3
So 6909-13-3 is a valid CAS Registry Number.

6909-13-3Relevant articles and documents

Hydrogenation en phase liquide sur Pd/C de derives mono et disubstitues du limonene

Pavia, Andre Armand,Geneste, Patrick,Olive, Jean-Louis

, p. 24 - 27 (2007/10/02)

Various derivatives of limonene, either monosubstituted: cis and trans-β-terpineols, (+) neodihydrocarveol, (-) isopulegol, or disubstituted: (+)-trans-N,N-2-dimethylamino-8-trans-p-menthene-1-ol, (+)-N,N-1-dimethylaminoneodihydrocarveol and (+)-trans-N,N-2-dimethylamino-8-cis-p-menthene-1-ol, have been hydrogenated on Pd/C or Adams PtO2 at 25 deg C and under a pressure of 1 atm in ether.With PtO2 the only product obtained has the same configuration as the starting material.On the opposite, due to its isomerising character, Pd/C leads to a mixture of two stereoisomers by racemisation of the asymmetric carbon at position 4 through migration of the exocyclic isopropenyl double bond.In the case of (+) neohydrocarvomenthone (4R) the double bond enters the ring, and so (+) carvomenthone (4R) and (-) isocarvomenthone (4S) are obtained.

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